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Home >> Chevrolet >> 2004 >> Impala Base, 3.4 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System 3.4L (Introduction) >> Repair Instructions >> Ignition Control Module Replacement >> Removal Procedure

Removal Procedure

  1. Disconnect the ignition control module (ICM) electrical connectors.
  2. Note position of spark plug wires for installation and disconnect the spark plug wires from the ignition coils.
    3. Fig 1: View Of Spark Plug Wire Connections To Ignition Coils
    GM15977Courtesy of GENERAL MOTORS CORP.
  3. Remove the ignition coil screws (1).
  4. Remove the ignition coils (2) from the ICM (3).
  5. Remove the ICM from the module mounting bracket.
    6. Fig 2: View Of Ignition Coil Module And Module Mounting Bracket
    GM12299Courtesy of GENERAL MOTORS CORP.
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